show dot1x

Interface

Name of a port.

MAC address

The MAC address of the connected supplicant on the port.

Role

The 802.1X authentication role of the interface. When 802.1X is enabled on an interface, the role is Authenticator. As Authenticator, the interface blocks LAN access until a supplicant is authenticated through 802.1X or MAC RADIUS authentication.

State

The state of the port:

• Authenticated—The supplicant has been authenticated through the RADIUS server or has been permitted access through server fail fallback.

• Authenticating—The supplicant is authenticating through the RADIUS server.

• Held—An action has been triggered through server fail fallback during a RADIUS server timeout. A supplicant is denied access, permitted access through a specified VLAN, or maintains the authenticated state granted to it before the RADIUS server timeout occurred.

User

The username of the connected supplicant.

Administrative state

The administrative state of the port:

• auto—Traffic is allowed through the port based on the authentication result (by default).

• force-authorize—All traffic flows through the port irrespective of the authentication result. This state is not allowed on an interface whose VLAN membership has been set to dynamic.

• force-unauthorize—All traffic drops on the port irrespective of the authentication result. This state is not allowed on an interface whose VLAN membership has been set to dynamic.

Supplicant

The mode for the supplicant:

• single—Only the first supplicant is authenticated. All other supplicants who connect later to the port are allowed full access without any further authentication. They effectively “piggyback” on the first supplicant’s authentication.

• single-secure—Only one supplicant is allowed to connect to the port. No other supplicant is allowed to connect until the first supplicant logs out.

• multiple—Multiple supplicants are allowed to connect to the port. Each supplicant is authenticated individually.

Quiet period

The number of seconds the port waits following a failed authentication exchange with the supplicant before reattempting the authentication. The default value is 60 seconds. The range is 0 through 65,535 seconds.

Transmit period

The number of seconds the port waits before retransmitting the initial EAPOL PDUs to the supplicant. The default value is 30 seconds. The range is 1 through 65,535 seconds.

MAC radius

MAC RADIUS authentication:

• enabled—The switch sends an EAPOL request to the connecting host to attempt 802.1X authentication and if the connecting host is unresponsive, the switch tries to authenticate the host by using the MAC address.

• disabled—The default. The switch does not attempt to authenticate the MAC address of the connecting host.

MAC radius authentication protocol

MAC RADIUS authentication protocol:

• EAP-MD5—The EAP-MD5 protocol is used for MAC RADIUS authentication. EAP-MD5 is an authentication method belonging to the Extensible Authentication Protocol (EAP) authentication framework. EAP-MD5 is the default authentication protocol.

• PAP—The Password Authentication Protocol (PAP) authentication protocol is used for MAC RADIUS authentication.

MAC radius restrict

The authentication method is restricted to MAC RADIUS only. 802.1X authentication is not enabled.

Reauthentication

The reauthentication state:

• disable—Periodic reauthentication of the client is disabled.

• interval—Sets the periodic reauthentication time interval. The default value is 3600 seconds. The range is 1 through 65,535 seconds.

Supplicant timeout

The number of seconds the port waits for a response when relaying a request from the authentication server to the supplicant before resending the request. The default value is 30 seconds. The range is 1 through 60 seconds.

Server timeout

The number of seconds the port waits for a reply when relaying a response from the supplicant to the authentication server before timing out. The default value is 30 seconds. The range is 1 through 60 seconds.

Maximum EAPOL requests

The maximum number of times an EAPOL request packet is retransmitted to the supplicant before the authentication session times out. The default value is 2. The range is 1 through 10.

Number of clients bypassed because of authentication

The number of non-802.1X clients granted access to the LAN by means of static MAC bypass. The following fields are displayed:

• Client—MAC address of the client.

• vlan —The name of the VLAN to which the client is connected.

Guest VLAN member

The VLAN to which a supplicant is connected when the supplicant is authenticated using a guest VLAN. If a guest VLAN is not configured on the interface, this field displays <not configured>.

Multi domain data session count

The number of data sessions that have been authenticated on a multi-domain authentication interface.

Number of connected supplicants

The number of supplicants connected to a port.

Supplicant

The username and MAC address of the connected supplicant.

Authentication method

The authentication method used for a supplicant:

• CWA Authentication—A supplicant is authenticated by the central Web authentication (CWA) server.

• Fail—Authentication failed and supplicant is in Held state.

• Guest VLAN—A supplicant is connected to the LAN through the guest VLAN.

• MAC RADIUS—A nonresponsive host is authenticated based on its MAC address. The MAC address is configured as permitted on the RADIUS server, the RADIUS server lets the switch know that the MAC address is a permitted address, and the switch opens LAN access to the nonresponsive host on the interface to which it is connected.

• RADIUS—A supplicant is configured on the RADIUS server, the RADIUS server communicates this to the switch, and the switch opens LAN access on the interface to which the supplicant is connected.

• Server-fail—One of the following fallback actions is in effect because the RADIUS server is unreachable. Indicates whether EAPOL block is in effect, and the amount of time remaining for EAPOL block (in seconds).

  • deny—The supplicant is denied access to the LAN, preventing traffic from flowing from the supplicant through the interface. This is the default server fail fallback action.

  • permit—The supplicant is permitted access to the LAN as if the supplicant had been successfully authenticated by the RADIUS server.

  • use-cache—In the event that the RADIUS server times out when the supplicant is attempting reauthentication, the supplicant is reauthenticated only if it was previously authenticated; otherwise, the supplicant is denied LAN access.

  • VLAN—The supplicant is configured to be moved to a specified VLAN if the RADIUS server is unavailable to reauthenticate the supplicant. (The VLAN must already exist on the switch.)

• Server-reject VLAN—The supplicant received a RADIUS access-reject message from the authentication server and was moved to a server-reject VLAN, a specified VLAN already configured on the switch.

Authenticated VLAN

The VLAN to which the supplicant is connected.

Dynamic filter

User policy filter sent by the RADIUS server.

Session Reauth interval

The configured reauthentication interval.

Reauthentication due in

The number of seconds in which reauthentication will occur again for the connected supplicant.

Session Accounting Interim Interval

The number of seconds between interim RADIUS accounting messages.

Accounting Update due in

The number of seconds until the next interim RADIUS accounting update is due.

CWA Redirect URL

The URL used to redirect the supplicant to a central Web server for authentication.

Eapol Block

Shows whether EAPOL block is in effect or not in effect.